Sharpening device for slicing-machine knives



June 14,1927.

P. J. l|.uc:E\f SHARPENING DEVICE FOR" SLICING MACHINE KNIVES l Filed Juiy s, 1922 :s shuts-sneer 2 Y [h1/@mmf June "14, 1927.- 1,632,088

am. LucEY SHARPENING DEVICE FGR SLICING MACHINE KNIVES` Filed July s, .1922 s sums-sheet 3 fn/ef? for:

Patented June 14, 1927.

mo LUCEY jsLIcING iicrAvoHiNaiA COMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

sHARrENING DEVICE .Fon summe- MACHINE KNIVES.

Application ledjJuly 5,

My invention` relates `to `new andv useful improvements in sharpening' devices for slicing machine knives, and more particularly for rotary circular knives, `and :has for its main object 'to provide a sharpening devi-ce which willk sharpen the `knives accurately, and which inexpensive, simple and `durable, and is-.casy to control. i

.Another Objectis to ,provide suchadevice in which the Apoints of contact of the sharpener and .knife willtravel in diti'erentidirections, in order to e'fectually sharpen the knife.

Another yobject isto provide 1a Sharpener withmeans frictionally` engageable with and actuated by the :otary slicingknife for driving` the sharpening meniber.

And another objeetis to provide `such a device in which the `Sharpener yWilhbe Idriven bythe knife, but Will `move contrary to -rthe knifeat its point ofxcontact therewith.

These and other :objects .and advantages will become `apparent `from the-following de` scription taken 1n connection Withithedrawings, in which, i

Fig. 1 isa side elevation of my sharpening Adevice mounted onthe chain housing of a slicing machine, inengagementl with `the rotary slicing knife of said machine;

Fig. 2 is an end elevation'of the part seen inFig. l; v

Fig.-3 is a plan View thereof; Fig. l is a vertical sectional View taken 0n line LTA ofFg. 12;

Fig. 5 is a horizontal Sectional View taken on line 5 5 of Fig. 4; Y i

Fig. 6 is sideelevatonof -a 4modified form of sharpening device.;

Fig. 7 is a vertical sectional View thereof, taken on line 7-7 of F ig. 6;

Fig. 8 is a horizontal sectional view non line'S-S `of Fig. 7.

In the form of myinvention illustrated in' Figs. 1 to v5 of the drawingsinysharpening V 'device comprises a supportinglbase 110, which with the use of suitable slots 11 andfastening members 12 mounts the `device adj-.ustably on the chain housing 131of the slicing machine, adjacent the circular slicing knife 14, which is rotatably. mounted `on said housing in the usual manner.

1922. serial Nobsvaszi.

The supporting base 10 lis'fprovide'd with 1a I sleeve 15 in which a tubular member 16 is Vrotatably mounted and 1s supported' forvertical adjustment on a set screw :threadedl` said sleeve. 0A

fastened to the upper end of *said tubularv PATENT @amf PATRICK J'. iLUCEY, OF VSOUTH BEND, INDIANAyASSIGNOR member for turning the same insaid sleeve. I

A. shaft 201s rotatably mounted in an ec- ,Y

centric vopening 21 -in `said ,tubular memberandehas a bevel pinion 22 fastenedfto its upper end, and a Wheel 24- is mounted with-a set `screw `E25 `for vertical adjustment beneath said pinion, a friction surface 267015 rubber,

leather, or the like .being provided on said ,Wheel in orderto have said wheel eifectually idriven by the rotating knife `1st. l

A bracket 27 is eccentrically mounted by nneansof a collar 28 on the upper end ofvtubular memberlt and held thereon by a nutv A29. The upper end of said` bracket-is yprovided With a bushing 30 which `supports a, rotatable shaft 31 and a .pinion 32 fastened .on its inner end and inengagement with pinion 22 on shaft 20, a circular Sharpener VVor isharpening member 33 being fastened onjthe4 f outer endof shaft 31'bymeans of apairyof `Washers andaretaininginu't 34. vAhandlei .isv threaded or otherwise suitably fastened `to `said bracket 27 for movingand holding 'the Sharpener 33.111 engagement with t-,hefusual i,

bevel edge or annular edge of theknife, with the desired degree of pressure, the sharpenV ing device being so :arranged ,that the sharpener shaft 31 and its supporting bushing?4 are parallel V`With the plane of the Vknife 14.l

While the 'device `is-in operation;

In operating ythis' device, the supporting member 11 is adjusted and yfastened on ther top `of the chain box by Vmeansiof screws 12,

and the `Wheel 24, With its shaft ,'2O1aud -eici i centric tubular member 16, is turned :by handle 19 into engagement with `theconveX side yofthe :slicing :knife 14, and is drivenby rotation off said knife, ythe notationfof Wheel 24 rotatingsharpener 33 by means `of pinions 22 and 32 and the connected shafts.- In ithe mean time the sharpenerismoved:again-st rtheiedge of .the lm-ife by imeansiof'handle 35 andlzetained infcontact with the edge of said knife Withthe ydesired er y.proper-degreeof pressure. To place the device in its inoperative position the handle and connected members 27 to 34 are returned to release position, as shown in dotted lines in Fig. 3.

The form of my device illustrated in Figs. 6 to 8 of the drawings comprises the supporting base 40 which is adjustably mountad by means of suitable slots 4l and fastening bolts 4,2 on top of the chain housing 43 of the usual slicing machine, adjacent the rotary slicing knife y44 of said machine.

The supporting base is provided with a sleeve 45 in which an oval stem 4G of a bracket 46 is adjustably mounted by means of a set screw 47. Said bracket is provided with an integral bushing 48 in which the vertical shaft 49 is rotatably mounted, the pinion 50 being fastened to the upper end of said shaft and a collar 5l near the lower end, engaging beneath said bushing. fr knuckle 52 is formed at the lower end of said stem and is pivotally connected by means of a knuckle or cl-evis 53 witlrthe shaft 54 carrying a wheel 55 which is adjustably mounted at the lower end of said shaft and is engageable with the convex side of the slicing knife 44 and driven by the rotation of said knife, said knuckle conneet-ion providing a universal joint between said shafts 49 and 54.

A bushing 56 is formed at the upper end of an arm 5Textending upward from the end of bracket 46', and a bushing 5S is formed at the upper end of an arm 59 which extends upward fronrsaid bracket. A shaft 60 is rotatably mounted in said bushings 56 und 58 and has a pinion (il fastened to it, which is driven by pinion 50. A sharpening wheel 62 is fastened to the outer end of shaft 60 by means of a pair of washers and a set screw 63 engaging in the end of said shaft.

Means is provided for moving the wheel 55 into engagement with the convex side of the slicing knife, said means comprising a lever 65'fulcru1ned on a bracket arm GG es:- tending downward at a slant from the bracket 46. A collar 6T surrounds shaft 54 and contains Va threaded linger 68 which ei;- tends'loosely through the slot (S9 in lever (55 and is retained on said lever by a suitable Washer and nut. A stop lug 7() is provided on stem 4G for linnting the release n'iovements of said lever, and a spring il is connected with said lever and the bracket 46" for normally retaining said lever against said lug, in release position.

In using this form of my invention the device is adjusted in the proper position in contact with the knife, by means of slots 4l and bolts 42 on the base 40, and the lever 65 is moved from the position shown in full lines in Fig. (3, to the position shown in dotted lines. in said ligure, thereby engaging the wheel 55 with the knife, as best shown in Fig. 7, and rotating shafts 54 and 49, pinions 50 and 6l, and sharpener '62. In the mean time the slicing knife 44 is driven by the operation of the machine in the usual manner. The wheel 55 is vertically adjustable on shaft 54, to place it at a greater or smaller radius on the slicing knife and allow for adjusting the speed of the Sharpener. Said Sharpener may thus be adjusted to be driven at the same peripheral speed as the knife, or at a different speed.

Ilt has been found in practice that very desirable results are obtained with either form of my sharpener while traveling at the une linear speed as the slicing knife at the point of contact, these Sharpeners being very effective in view of the fact that they rotate in a different direction than does the slicing knife at their point of contact.

The sharpener is also arranged to sharpen other articles, such butcher knives, clevers, etc. For this purpose the wheel 24 of the form of my invention shown in Figs. l to 5 is moved into engagement with the slicing knife, as shown in full line positions of said wheel Q4 and lever 19 in Fig. 3, while the sharpencr with its lever 35 are moved away from the knife, substantially in the dotted line position in said Fig. 3, the article which is to be sharpened being conveniently held against the sharpener and the machine operated in the usual manner. In the form shown in Figs. 6 to 8 the sharpening wheel may be similarly moved away from the knife by loosening bolts 42, while thewheel 45 is retained in contact with the knife.

What l claim as new and desire to ser-nre by Letters Patent is: V

l. A. device for sharpening the bevel edge of a circular rotary knife of a slicing machine1 comprising in combination, a rotary knife sharpening member, means driven by the engagement with the side of a knife, operative connections between said knife driven means and said sharpener, and handle means for readily swinging said sharpening member into and out of engagement with said knife.

2. A device for sharpening the bevel edge of a circular rotary knife of a slit-,ing machine, comprising in crmibination, a rotary knife sharpeningA member. means for permanently mounting said member on said machine and for conveniently moving said member toward and from said knife, means driven by engagement with the knife, transmission mechanism between said knife driven means and said sharpening men'il'ier, and eccentric means for inoving said knife driven means into and out of contact with said knife.

S. A device for sharpening the bevel edge of a'convex circular knife of a slicing malil chine, comprising in combination, a rtary grinder `a frictionahwheel driven the ro'- tatingkni'fe, driving oiinectioir` for rotating said grinder by said wlieel,`aiid meahsfor readily moving said grinder into and 'out of contact with said knife. y

4. A device for sharpening the rotary circular knife of a slicing machiiie, comprising in combination, a rotary grinder, a frictional wheel driven by the rotary knife, means for rotating said grinder with said wheel, means for moving said grinder into and out of contact with said knife, and a handle with eccentric means for moving said grinder and said wheel together into and out of contact with said knife.

5. A device for sharpening the rotary circular knife of a slicing machine, comprising in combination, a Sharpener, means driven by engagement with side of said knife, driving connections between said knife driven means and said Sharpener, and means including a screw and a stem supported thereon for adjusting said Sharpener radially with respect to the edge of said knife.

6. A device for .sharpening the rotary circular knife of a slicing machine, comprising in con'ibination, a Sharpener, means driven by engagen'ient with the side of said knife, driving connections between said knife driven means and said` Sharpener, and

means for adjusting said knife driven means radially with respect to said knife to vary the speed ratio between said knife and said Sharpener.

7. A device' for sharpening the rotary cir-l cular knife of a slicing machine, comprising in combination, a knife sharpening member,

a bracket for supporting said Sharpening member, means engageable withjthe knife for driving said Sharpener, and means for adjusting said knife driven means and said sharpener with respect to each other.

8. A device for sharpening the rotary knife of a slicing machinefcomprising in combination, a bracket-l aoljustably mounted on said machine, a shaft rotatably mounted :in said brackets a Sharpener fastened on said shaft, a. second shaft rotatably and eccentrically mounted in said bracket, gears connecting said shafts, a rotatable member fas-v tened on said second shaft, means for adjusting said Shaft and member radially on said knife to vary the speed ratio of said member and knife, and means to move said rotatable member into engagement with said knife to drive said shafts and Sharpener.

9. A device for sharpening the rotary knife of a slicing machine, comprising in combii'iation, a supporting base adjustably mounted on said machine, a bracket adjustably mounted on said base, a knife Sharpener rotatably mounted on said bracket, a shaft movably mounted on said bracket, a set screw in said bracket to support said shaft,

'sharpening means a "'meniber adjustably {faste-lied oir s iid shaft @jgble' and Operable Eby said "knife, and

'10. In slicing machine having Vrotatable ci1'ciilarknife, in combination, a'lbra t adj ustably 'ni'oui'ited' on saidnachii'iefa 'shaft mounted knife, sharpening means fastened on said shaft, means engaged'and driven by said rotatable knife, a `handle and eccentric means for readily moving said knife driven means into and out of engagement with the knife, and connecting means for with said knife driven means.

11. In a slicing machine having a convex circular knife, in combination, a shaft, means on said machine for supporting said shaft parallel with the plane of said knife, a. rotary Sharpener `fixed on said shaft, a Wheel driven by engagement with the convex side of said knife, mechanism for rotating Said shaft by` means of said driven wheel, and swingable means for readily vmoving said sharpeiier and said from said knife.

12. In a slicing machine having a rotatable knife, a supportingbase with avsleeve adjustably mounted on said machine, a bracket having a stem with which it is adjustably mounted in said sleeve, a shaft mounted in said bracket, a sharpener'mounted on said bracket, driving connections between Said shaft and said Sharpener, a knife driven wheel, SwingablyI connected with the parallel with` the plane of said actuating said wheel together awayV lower-end of said shaft, and means for swinging said driven wheel intoengagement with said rotatable knife.

13. In a slicing machine having a rotatable knife, and a chain housing with a rotatable shaft for supporting said knife, a supporting base with a sleeve adjustably mounted on said housing, a bracket having a stem with which it is adjustablymounted in said sleeve, a vertical shaft mounted in said bracket, a swingable shaft having universal joint connected with said vertical shaft, a knife driven wheel a-djustably mounted on said swingable shaft, and means for swinging said wheel into action with said knife.

14. A device for sharpening the bevel edge of a circular rotary knife of a slicing machine, comprising in combination, a sharpener, a wheel driven by engagement with the side face of the knife, driving connections between said' knife driven Wheel and said sharpenenand meansincluding an adjustable member with a shaft carried thereby and means to fasten said wheel on said shaft, for adjusting said wheel radially 011 said knife to vary the speed of the Sharpener with respect to said knife.

15. A Sharpening, device for a rotary knife of a slicing machine, comprising in combinalili tion, a support mounted on the knife supporting housing of said machine, a sharpening member for said rotary knife, rotatably mounted on said support, a Wheel mounted on said support and driven by engagement with said rotary knife transmission mechanism between said sharpeningI member and 

